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Guest Columns

Gregory Unruh / Thunderbird School of Global Management

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Gregory Unruh

Gregory Unruh, Ph.D., is a professor of global business and director of the Lincoln Center for Ethics in Global Management at Thunderbird School of Global Management. Unruh is a leading expert on sustainable business strategy and an outspoken advocate of ethics and corporate… Read more

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Kumar Venkat / CleanMetrics Corporation

Kumar Venkat

Kumar Venkat is president and chief technologist at CleanMetrics Corp., a provider of analytical solutions for the sustainable economy. Read more

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Diana Verde-Nieto / Clownfish

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Diana Verde-Nieto

Diana Verde-Nieto is CEO of sustainability communications agency Clownfish…. Read more

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Manuel Vianna / Diskeeper Corporation

Manuel Vianna

Manuel Vianna is CFO of Diskeeper Corporation, innovators in performance and reliability technologies…. Read more

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Lou Vidaillet / Howard Ecker + Company

Lou Vidaillet

Lou Vidaillet is Vice President of Howard Ecker + Company where he specializes in business development, lease negotiation, lease analysis and tracking multiple office markets across the United States. Howard Ecker + Company recently launched its Cleantech Real Estate Group (CREG)…. Read more

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Bjorn Von Euler / ITT Corp.

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Bjorn Von Euler

Bjorn Von Euler is director of corporate philanthropy for ITT Corp. He is writing a series of reports on the World Water Week event in Stockholm, Sweden, for Environmental Leader…. Read more

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Robert Vos, PhD / CLEAN Agency

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Robert Vos

Dr. Vos has more than 15 years of research experience in sustainability science and policy. As Research Director for CLEAN Agency, Dr. Vos deploys industrial ecology tools to achieve transformative sustainability strategies for leading brands, including Fortune 500 companies. Read more

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David Walker / PepsiCo

David Walker

David Walker is Director of Environmental Sustainability for PepsiCo, www.pepsico.comRead more

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Mattias Wallander / USAgain

Mattias Wallander

Mattias Wallander is CEO of USAgain, a textile collection company headquartered in Chicago. The company collects used clothing in major markets across the U.S. including Chicago, Seattle, Atlanta, Milwaukee and, soon, San Francisco…. Read more

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John C. Warner / Warner Babcock Institute for Green Chemistry

John C. Warner

John C. Warner is President and Chief Technology Officer of the Warner Babcock Institute for Green Chemistry…. Read more

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Doug Washburn / Forrester Research, Inc.

Doug Washburn

Doug Washburn is an Analyst at Forrester Research, Inc. His research helps IT executives successfully approach green IT, determine strategy, and then move from green IT awareness to action…. Read more

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Chris Watts / Actio Corporation

Chris Watts

Chris Watts currently serves as an Environmental Regulation Expert at Actio Corporation in Portsmouth, NH. He is pursuing advanced studies in Environmental Science at Johns Hopkins University, Baltimore, MD…. Read more

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Adam Werbach / Saatchi & Saatchi

Adam Werbach

Adam Werbach is CEO of Saatchi & Saatchi S, the sustainability division of global ideas company Saatchi & Saatchi. His next book Strategy for Sustainability: A Business Manifesto will published by Harvard Business Press in June…. Read more

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Dr. Richard Westaway / IMS Consulting

Dr. Richard Westaway

Dr. Richard Westaway is a researcher at IMS Consulting. The company develops and delivers two way, online stakeholder dialogue, engagement and communications platforms. Read more

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Tensie Whelan / Rainforest Alliance

Tensie Whelan

Tensie Whelan is President of the global sustainability non-profit Rainforest Alliance, whose representatives are now at COP15 pushing for a strong REDD agreement…. Read more

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Scott Wicker / UPS

Scott Wicker

Scott Wicker serves as vice president of sustainability and vice president of corporate plant engineering for UPS, the world’s largest package delivery company and a global leader in supply chain services. For more information on sustainability at UPS, visit www.sustainability.ups.com…. Read more

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David Wigder / OgilvyEarth

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David Wigder

David Wigder is a lifelong environmentalist and has worked as a business strategist, environmental engineer and marketer in the space.  He holds an MBA from Columbia Business School, an MSE in environmental engineering from the University of Michigan and a BA from Northwestern University. He recently joined OgilvyEarth as Senior Director, Marketing Strategy. Read more

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Kevin Wilhelm / Sustainable Business Consulting

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Kevin Wilhelm

Kevin Wilhelm is the CEO of Sustainable Business Consulting and the author of Return on Sustainability: How Business Can Increase Profitability & Address Climate Change in an Uncertain EconomyRead more

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Becky Willan / Clownfish

Becky Willan

Becky Willan is Head of Strategy for Clownfish, a London-based marketing/communications agency that specializes in sustainability…. Read more

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Robert Wise / InterCall

Robert Wise

Robert Wise is Executive VP, Strategic Business Development, at InterCall, which provides a number of different conferencing solutions…. Read more

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Greg Wittbecker / Alcoa Inc.

Greg Wittbecker

Greg Wittbecker is Director Corporate Metal Recycling Strategy at Alcoa Inc…. Read more

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Michael Woelk / Picarro, Inc.

Michael Woelk

Michael Woelk is the CEO of Picarro, Inc., a maker of greenhouse gas detection and measurement equipment based in Sunnyvale whose customers include the National Oceanic and Atmospheric Administration, the Chinese Meteorological Administration, the World Meteorological Organization. and the California Air Resources… Read more

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Ken Wolslegel / Chartis

Ken Wolslegel

Ken Wolslegel is senior underwriter for Chartis…. Read more

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Derek Wong / Carbon49

Derek Wong

Derek Wong is a Toronto based climate change and sustainability consultant. Contact him through his blog Carbon49.com…. Read more

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Jonathan Wootliff / Reputation Partners

Jonathan Wootliff

Jonathan Wootliff is the former Communications Director for Greenpeace International and now now heads the Corporate Accountability practice at Chicago-based Reputation Partners, where he works with global corporations to build effective corporate accountability strategies, particularly on environmental issues…. Read more

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Thatcher Young / ignition

Thatcher Young

Thatcher Young is the Sustainability Director at ignition Inc., an experiential marketing agency behind Coca-Cola’s Olympic Torch Relays and the Live Earth concert. He previously served as Sustainability Advisor and Sustainability Outreach Manager to the Georgia Department of Natural Resources…. Read more

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